title: [Infrared spectroscopic determinations of mannitol].
abstract: Three different infrared-spectra of Mannit were obtained according to unused Mannit, melted Mannit, and the crystallized form out of methanol. The melting points of the three Mannit-modifications were in accordance 166.5 degrees C. Similar effects have been found with Diethylbarbituric acid. X-ray diffraction patterns and main differences of the infrared-spectra between v = 1100- and 1500 cm-1 - the range, where the molecule in bulk is characterized -, verify three different crystal structures of Mannit.
mesh_terms: D003460:Crystallization; D005554:Forensic Medicine; D003932:Heroin / Q000032:analysis*; D013287:Illicit Drugs / Q000032:analysis; D007259:Infrared Rays; D008353:Mannitol / Q000032:analysis*; D013057:Spectrum Analysis
chemical_list: D013287:Illicit Drugs; D008353:Mannitol; D003932:Heroin
vernacular_title: Zum infrarotspektoroskopischen Nachweis von Mannit.